Use of at least one polyamide polymer in a mascara composition for increasing the adhesion of and/or expressly loading make-up deposited on eyelashes

ABSTRACT

The invention relates to the use of at least one polymer chosen from ethylenediamine/stearyl dimer tallate copolymer in a mascara for increasing the adhesion of and/or expressly loading make-up deposited on the eyelashes.

This application claims priority under 35 U.S.C. §119 to U.S.Provisional Application No. 60/280,847, filed Apr. 3, 2001.

The present invention relates to a composition comprising, in aphysiologically acceptable medium, a dispersion of film-forming polymerparticles and a polymer containing a specific hetero atom, thecomposition being intended in particular for cosmetics. The inventionalso relates to a cosmetic make-up or care process for keratinmaterials. The make-up or care process and composition according to theinvention are intended more particularly for the keratin materials ofhuman beings, such as the skin (including the scalp), the nails, keratinfibers, especially substantially longilinear keratin fibers, such as theeyelashes, the eyebrows and the hair. The invention more especiallyrelates to a mascara.

The composition according to the invention can be in the form of acoating composition for the eyelashes (in particular a mascara), aneyeliner, a product for the eyebrows, a product for the lips, a facepowder, an eyeshadow, a foundation, a make-up product for the body, aconcealer product, a nail varnish, a skincare product, including aproduct for scalp care, or a haircare product (hair mascara or spray).

The make-up composition may also be applied to make-up accessories(supports) such as false eyelashes, hairpieces, wigs or false nails oralternatively to pellets or patches adhering to the skin or the lips(such as beauty spots).

Compositions for coating the eyelashes, known as mascaras, generallycomprise, in a known manner, at least one wax in the form of awax-in-water emulsion, and at least one film-forming polymer to deposita make-up film on the eyelashes and to coat them, for example asdescribed in document WO-A-95/15741. Users expect these products to havegood cosmetic properties, such as adhesion to the eyelashes, lengtheningor curling of the eyelashes, or alternatively good staying power of themascara over time, in particular good resistance to rubbing, for examplewith the fingers or fabrics (handkerchiefs or towels).

However, with these compositions, the make-up properties such as thecoating, the lengthening or the curling of the eyelashes are obtainedwhen a large amount of product is deposited on the eyelashes using anapplicator, such as a mascara brush. When the composition does notadhere well to the eyelashes, the user must apply the brush impregnatedwith product onto the eyelashes several times, which requires a certainamount of time to be devoted to applying the make-up and obtaining thedesired make-up results. However, this time may be perceived as far toolong by users in a hurry. There is thus a need to have availablemascaras that allow the expected make-up effect to be obtained quicklyand easily.

The aim of the present invention is to provide a composition for makingup keratin materials, especially keratin fibers such as the eyelashes,which applies easily to the keratin materials and leads quickly to amake-up effect with good cosmetic properties.

The inventors have found, surprisingly, that the use of a polymercontaining a specific hetero atom in a composition comprising particlesof a film-forming polymer dispersed in the medium of the compositionmakes it possible to improve the adhesion properties of the compositionon keratin materials, especially on keratin fibers such as theeyelashes. The composition is easy to apply to the keratin materials andallows the composition to be deposited quickly in an amount that issufficient to obtain a make-up effect with the expected cosmeticproperties. In particular, a thick deposit of the make-up on the keratinmaterials is quickly obtained, which avoids the users having to spendtoo long applying the composition to the keratin materials.

Thus, for a mascara, a make-up which quickly thickens the keratinfibers, in particular the eyelashes, is obtained; instantaneous loadingof the eyelashes is thus observed. The mascara also gives goodlengthening to the made-up eyelashes.

More specifically, a subject of the invention is a compositioncomprising, in a physiologically acceptable medium, at least one firstpolymer with a weight-average molecular mass of less than 100 000,comprising a) a polymer skeleton containing hydrocarbon-based repeatingunits containing at least one hetero atom, and optionally b) at leastone pendent fatty chain and/or at least one terminal fatty chain, whichmay be functionalized, containing from 6 to 120 carbon atoms and beinglinked to these hydrocarbon-based units, and a dispersion of particlesof a second film-forming polymer that is insoluble in said medium.

A subject of the invention is also a cosmetic process for making up orcaring for the keratin materials of human beings, comprising theapplication of a composition as defined above to the keratin materials.Preferably, the process applies to substantially longilinear keratinfibers such as the eyelashes, the hair and the eyebrows, and moreespecially to the eyelashes.

A subject of the invention is also the use of a composition as definedabove to obtain a deposit which adheres to keratin materials and/or aquick make-up result on keratin materials.

Another subject of the invention is the use of a mascara comprising acomposition as defined above to thicken quickly and/or to lengthen theeyelashes.

A subject of the invention is also the use, in a physiologicallyacceptable composition, of a combination of at least one first polymerwith a weight-average molecular mass of less than 100 000 and betterstill less than 50 000, comprising a) a polymer skeleton containinghydrocarbon-based repeating units containing at least one hetero atom,and b) optionally at least one pendent fatty chain and/or at least oneterminal fatty chain, which may be functionalized, containing from 6 to120 carbon atoms and being linked to these hydrocarbon-based units, andat least one dispersion of particles [lacuna] a second film-formingpolymer that is insoluble in said medium to obtain a deposit whichadheres to keratin materials and/or a quick make-up result on keratinmaterials and/or to thicken quickly and/or lengthen the eyelashes.

The expression “physiologically acceptable medium” means a medium whichis non-toxic and which can be applied to the skin, superficial bodygrowths or the lips of human beings, such as a cosmetic medium.

For the purposes of the invention, the expression “functionalized chain”means an alkyl chain comprising one or more functional or reactivegroups chosen in particular from amide, hydroxyl, ether, oxyalkylene,polyoxyalkylene and halogen groups, including fluoro or perfluorogroups, ester, siloxane and polysiloxane groups. In addition, thehydrogen atoms of one or more fatty chains may be substituted at leastpartially with fluorine atoms.

According to the invention, these chains may be linked directly to thepolymer skeleton or via an ester function or a perfluoro group.

For the purposes of the invention, the term “polymer” means a compoundcontaining at least 2 repeating units and preferably at least 3repeating units.

For the purposes of the invention, the expression “hydrocarbon-basedrepeating units” means a unit containing from 2 to 80 carbon atoms andpreferably from 2 to 60 carbon atoms, bearing hydrogen atoms andoptionally oxygen atoms, which may be linear, branched or cyclic, andsaturated or unsaturated. These units each also comprise one or morehetero atoms that are advantageously non-pendent but are in the polymerskeleton. These hetero atoms are chosen from nitrogen, sulfur andphosphorus atoms and combinations thereof, optionally combined with oneor more oxygen atoms. The units preferably comprise at least onenitrogen atom, in particular a non-pendent nitrogen atom. These unitsalso advantageously comprise a carbonyl group.

The units containing a hetero atom are, in particular, amide unitsforming a skeleton of the polyamide type, carbamate and/or urea unitsforming a polyurethane, polyurea and/or polyurea-urethane skeleton.These units are preferably amide units. The pendent chains areadvantageously linked directly to at least one of the hetero atoms ofthe polymer skeleton.

Between the hydrocarbon-based units, the first polymer may comprisesilicone units or oxyalkylene units.

In addition, the first polymer in the composition of the inventionadvantageously comprises from 40% to 98% of fatty chains relative to thetotal number of units containing a hetero atom and of fatty chains, andbetter still from 50% to 95%. The nature and proportion of the unitscontaining a hetero atom depends on the nature of the fatty phase andis, in particular, similar to the polar nature of the fatty phase. Thus,the more the units containing a hetero atom are polar and in highproportion in the first polymer, which corresponds to the presence ofseveral hetero atoms, the greater the affinity of the first polymer forpolar oils. On the other hand, the less polar or even apolar the unitscontaining a hetero atom or the lower their proportion, the greater theaffinity of the first polymer for apolar oils.

The first polymer is advantageously a polyamide. Thus, a subject of theinvention is also a composition containing, in a physiologicallyacceptable medium, at least one first polyamide polymer with aweight-average molecular mass of less than 100 000, comprising a) apolymer skeleton containing amide repeating units, and b) optionally atleast one pendent fatty chain and/or at least one terminal chain, whichmay be functionalized, containing from 8 to 120 carbon atoms and beinglinked to these amide units, and a dispersion of particles of a secondfilm-forming polymer that is insoluble in said medium.

The pendent fatty chains are preferably linked to at least one of thenitrogen atoms of the amide units of the first polymer.

In particular, the fatty chains of this polyamide represent from 40% to98% of the total number of amide units and of fatty chains, and betterstill from 50% to 95%.

Advantageously, the first polymer, and in particular the polyamide, ofthe composition according to the invention has a weight-averagemolecular mass of less than 100 000 (especially ranging from 1 000 to100 000), in particular less than 50 000 (especially ranging from 1 000to 50 000) and more particularly ranging from 1 000 to 30 000,preferably from 2 000 to 20 000 and better still from 2 000 to 10 000.

The first polymer, and in particular the polyamide, is insoluble inwater, especially at 25° C. In particular, it contains no ionic groups.

As preferred first polymers which may be used in the invention, mentionmay be made of polyamides branched with pendent fatty chains and/orterminal fatty chains containing from 6 to 120 carbon atoms and betterstill from 8 to 120 and in particular from 12 to 68 carbon atoms, eachterminal fatty chain being linked to the polyamide skeleton via at leastone bonding group, in particular an ester. These polymers preferablycomprise a fatty chain at each end of the polymer skeleton and inparticular of the polyamide skeleton. Other bonding groups which may bementioned are ether, amine, urea, urethane, thioester, thiourea andthiourethane groups.

These first polymers are preferably polymers resulting from apolycondensation between a dicarboxylic acid containing at least 32carbon atoms (in particular containing from 32 to 44 carbon atoms) andan amine chosen from diamines containing at least 2 carbon atoms (inparticular from 2 to 36 carbon atoms) and triamines containing at least2 carbon atoms (in particular from 2 to 36 carbon atoms). The diacid ispreferably a dimer of a fatty acid containing ethylenic unsaturationcontaining at least 16 carbon atoms, preferably from 16 to 24 carbonatoms, for instance oleic acid, linoleic acid or linolenic acid. Thediamine is preferably ethylenediamine, hexylenediamine orhexamethylenediamine. The triamine is, for example, ethylenetriamine.For the polymers comprising one or 2 terminal carboxylic acid groups, itis advantageous to esterify them with a monoalcohol containing at least4 carbon atoms, preferably from 10 to 36 carbon atoms, better still from12 to 24 and even better from 16 to 24, for example 18 carbon atoms.

These polymers are more especially those disclosed in document U.S. Pat.No. 5,783,657 from the company Union Camp. Each of these polymers inparticular satisfies formula (I) below:

in which n denotes a number of amide units such that the number of estergroups represents from 10% to 50% of the total number of ester and amidegroups; R¹ is, independently in each case, an alkyl or alkenyl groupcontaining at least 4 carbon atoms and in particular from 4 to 24 carbonatoms; R² represents, independently in each case, a C₄ to C₄₂hydrocarbon-based group, on condition that 50% of the groups R²represent a C₃₀ to C₄₂ hydrocarbon-based group; R³ represents,independently in each case, an organic group containing at least 2carbon atoms, hydrogen atoms and optionally one or more oxygen ornitrogen atoms; and R⁴ represents, independently in each case, ahydrogen atom, a C₁ to C₁₀ alkyl group or a direct bond to R³ or toanother R⁴, such that the nitrogen atom to which R³ and R⁴ are bothattached forms part of a heterocyclic structure defined by R⁴—N—R³, withat least 50% of the groups R⁴ representing a hydrogen atom.

In the particular case of formula (I), the terminal fatty chains thatare optionally functionalized for the purposes of the invention areterminal chains linked to the last hetero atom, in this case nitrogen,of the polyamide skeleton.

In particular, the ester groups of formula (I), which form part of theterminal and/or pendent fatty chains for the purposes of the invention,represent from 15% to 40% of the total number of ester and amide groupsand better still from 20% to 35%. Furthermore, n is advantageously aninteger ranging from 1 to 5 and better still greater than 2. Preferably,R¹ is a C₁₂ to C₂₂ and preferably C₁₆ to C₂₂ alkyl group.Advantageously, R² can be a C₁₀ to C₄₂ hydrocarbon-based (alkylene)group. Preferably, at least 50% and better still at least 75% of thegroups R² are groups containing from 30 to 42 carbon atoms. The othergroups R² are C₄ to C₁₈ and better still C₄ to C₁₂ hydrogen-containinggroups. Preferably, R³ represents a C₂ to C₃₆ hydrocarbon-based group ora polyoxyalkylene group and R⁴ represents a hydrogen atom. Preferably,R³ represents a C₂ to C₁₂ hydrocarbon-based group.

The hydrocarbon-based groups may be linear, cyclic or branched, andsaturated or unsaturated groups. Moreover, the alkyl and alkylene groupsmay be linear or branched, and saturated or unsaturated groups.

In general, the polymers of formula (I) are in the form of mixtures ofpolymers, these mixtures also possibly containing a synthetic productcorresponding to a compound of formula (I) in which n is 0, i.e. adiester.

As examples of first polymers according to the invention, mention may bemade of the commercial products sold by the company Arizona Chemicalunder the names Uniclear® 80 and Uniclear® 100. They are sold,respectively, in the form of an 80% (in terms of active material) gel ina mineral oil and a 100% (in terms of active material) gel. They have asoftening point of from 88 to 94° C. These commercial products are amixture of copolymers of a C₃₆ diacid condensed with ethylenediamine,having a weight-average molecular mass of about 6 000. The terminalester groups result from the esterification of the remaining acidendings with cetyl alcohol, stearyl alcohol or mixtures thereof (alsoknown as cetylstearyl alcohol).

As first polymers which can be used in the invention, mention may alsobe made of polyamide resins resulting from the condensation of analiphatic dicarboxylic acid and a diamine (including compoundscontaining more than 2 carbonyl groups and 2 amine groups), the carbonyland amine groups of adjacent individual units being condensed via anamide bond. These polyamide resins are, in particular, those sold underthe brand name Versamid® by the companies General Mills Inc. and HenkelCorp. (Versamid 930, 744 or 1655) or by the company Olin MathiesonChemical Corp. under the brand name Onamid®, in particular Onamid S orC. These resins have a weight-average molecular mass ranging from 6 000to 9 000. For further information regarding these polyamides, referencemay be made to the documents U.S. Pat. No. 3,645,705 and U.S. Pat. No.3,148,125. More especially, Versamid® 930 or 744 is used.

The polyamides sold by the company Arizona Chemical under the referencesUni-Rez® (2658, 2931, 2970, 2621, 2613, 2624, 2665, 1554, 2623 and 2662)and the product sold under the reference Macromelt 6212 by the companyHenkel may also be used. For further information regarding thesepolyamides, reference may be made to document U.S. Pat. No. 5,500,209.

It is also possible to use polyamide resins obtained from plants, suchas those disclosed in U.S. Pat. No. 5,783,657 and U.S. Pat. No.5,998,570.

The first polymer present in the composition according to the inventionadvantageously has a softening point of greater than 65° C., which maybe up to 190° C. It preferably has a softening point ranging from 70° C.to 130° C. and better still from 80° C. to 105° C. The first polymer isin particular a non-waxy polymer.

The first polymer according to the invention preferably corresponds tothe formula (I) mentioned above. On account of its fatty chain(s), thisfirst polymer is readily soluble in oils and thus leads to compositionsthat are macroscopically homogeneous even with a high content (at least25%) of polymer, unlike polymers not containing a fatty chain.

The first polymer may be present in the composition according to theinvention in a content ranging from 0.01% to 10% by weight, relative tothe total weight of the composition, preferably ranging from 0.05% to 5%by weight and better still ranging from 0.1% to 3% by weight.

The composition according to the invention may comprise a fatty phasewhich can comprise fatty substances chosen from oils, organic solvents,waxes and pasty fatty substances, and mixtures thereof. The fatty phasecan form a continuous phase of the composition. In particular, thecomposition according to the invention may be anhydrous.

The fatty phase may especially consist of any oil which isphysiologically acceptable and in particular cosmetically acceptable,chosen especially from oils of mineral, animal, plant or syntheticorigin, carbon-based oils, hydrocarbon-based oils, fluoro oils and/orsilicone oils, alone or as a mixture, provided that they form ahomogeneous and stable mixture and provided that they are compatiblewith the intended use.

The total fatty phase of the composition, which may be a liquid fattyphase, can represent from 2% to 98% by weight, relative to the totalweight of the composition, and preferably from 5% to 85% by weight.

The fatty phase of the composition can advantageously comprise at leastone volatile oil or organic solvent and/or at least one non-volatileoil.

For the purposes of the invention, the expression “volatile oil ororganic solvent” means any non-aqueous medium which can evaporate oncontact with the skin in less than one hour at room temperature andatmospheric pressure. The volatile organic solvent(s) and the volatileoils of the invention are volatile cosmetic organic solvents and oils,that are liquid at room temperature, having a non-zero vapour pressureat room temperature and atmospheric pressure, ranging in particular from10⁻² to 300 mmHg (0.13 Pa to 40 000 Pa) and preferably greater than 0.3mmHg (30 Pa). The expression “non-volatile oil” means an oil whichremains on the skin at room temperature and atmospheric pressure for atleast several hours and which in particular has a vapour pressure ofless than 10⁻² mmHg (1.33 Pa).

These oils may be hydrocarbon-based oils, silicone oils or fluoro oils,or mixtures thereof.

The expression “hydrocarbon-based oil” means an oil mainly containinghydrogen and carbon atoms and optionally oxygen, nitrogen, sulfur orphosphorus atoms. The volatile hydrocarbon-based oils may be chosen fromhydrocarbon-based oils containing from 8 to 16 carbon atoms, andespecially C₈-C₁₆ branched alkanes, for instance C₈-C₁₆ isoalkanes ofpetroleum origin (also known as isoparaffins), for instance isododecane(also known as 2,2,4,4,6-pentamethylheptane), isodecane andisohexadecane, and, for example, the oils sold under the trade namesIsopars or Permetyls, C₈-C₁₆ branched esters, isohexyl neopentanoate,and mixtures thereof. Other volatile hydrocarbon-based oils, forinstance petroleum distillates, especially those sold under the nameShell Solt by the company Shell, may also be used. The volatile solventis preferably chosen from hydrocarbon-based volatile oils containingfrom 8 to 16 carbon atoms, and mixtures thereof.

Volatile oils which may also be used are volatile silicones such as, forexample, linear or cyclic volatile silicone oils, especially those witha viscosity≦8 centistokes (8×10⁻⁶ m²/s) and especially containing from 2to 7 silicon atoms, these silicones optionally comprising alkyl oralkoxy groups containing from 1 to 10 carbon atoms. As volatile siliconeoils which may be used in the invention, mention may be made inparticular of octamethylcyclotetrasiloxane,decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane,heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane,hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane anddodecamethylpentasiloxane, and mixtures thereof.

Volatile fluoro solvents such as nonafluoromethoxybutane orperfluoromethylcyclopentane may also be used.

The volatile oil may be present in the composition according to theinvention in a content ranging from 0% to 98% by weight (in particularfrom 0.1% to 98%), relative to the total weight of the composition,preferably from 0% to 65% by weight (in particular from 1% to 65%).

The composition can also comprise at least one non-volatile oil chosenin particular from non-volatile hydrocarbon-based and/or silicone and/orfluoro oils.

Non-volatile hydrocarbon-based oils which may be mentioned in particularare:

-   -   hydrocarbon-based plant oils such as triglycerides consisting of        fatty acid esters and of glycerol in which the fatty acids may        have varied chain lengths from C₄ to C₂₄, these chains possibly        being linear or branched, and saturated or unsaturated; these        oils are, in particular, wheat germ oil, sunflower oil, grape        seed oil, sesame oil, corn oil, apricot oil, castor oil, karite        butter, avocado oil, olive oil, soybean oil, sweet almond oil,        palm oil, rape seed oil, cotton oil, hazelnut oil, macadamia        oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, marrow        oil, blackcurrant seed oil, evening primrose oil, millet oil,        barley oil, quinoa oil, rye oil, safflower oil, candlenut oil,        passion flower oil and musk rose oil; or alternatively        caprylic/capric acid triglycerides such as those sold by        Stearineries Dubois or those sold under the names Miglyol 810,        812 and 818 by Dynamit Nobel;    -   synthetic ethers containing from 10 to 40 carbon atoms;    -   linear or branched hydrocarbons of mineral or synthetic origin,        such as petroleum jelly, polydecenes, hydrogenated polyisobutene        such as parleam, and squalane, and mixtures thereof;    -   synthetic esters such as oils of formula R₁COOR₂ in which R₁        represents a linear or branched fatty acid residue containing        from 1 to 40 carbon atoms and R₂ represents an in particular        branched hydrocarbon-based chain containing from 1 to 40 carbon        atoms, on condition that R₅+R₆≧10, such as, for example,        purcellin oil (cetostearyl octanoate), isopropyl myristate,        isopropyl palmitate, C₁₂-C₁₅ alkyl benzoate, hexyl laurate,        diisopropyl adipate, isononyl isononanoate, 2-ethylhexyl        palmitate, isostearyl isostearate, alkyl or polyalkyl        octanoates, decanoates or ricinoleates such as propylene glycol        dioctanoate; hydroxylated esters such as isostearyl lactate and        diisostearyl malate; and pentaerythritol esters;    -   fatty alcohols that are liquid at room temperature, containing a        branched and/or unsaturated carbon-based chain containing from        12 to 26 carbon atoms, for instance octyldodecanol, isostearyl        alcohol, oleyl alcohol, 2-hexyldecanol, 2-butyloctanol or        2-undecylpentadecanol;    -   higher fatty acids such as oleic acid, linoleic acid or        linolenic acid;        and mixtures thereof.

The non-volatile silicone oils which may be used in the compositionaccording to the invention may be non-volatile polydimethylsiloxanes(PDMSs), polydimethylsiloxanes comprising alkyl or alkoxy groups, thatare pendent and/or at the end of a silicone chain, the groups eachcontaining from 2 to 24 carbon atoms, phenylsilicones, for instancephenyltrimethicones, phenyldimethicones,phenyltrimethylsiloxydiphenylsiloxanes, diphenyldimethicones,diphenylmethyldiphenyltrisiloxanes and 2-phenylethyltrimethylsiloxysilicates.

The fluoro oils which may be used in the invention are, in particular,fluorosilicone oils, fluoropolyethers or fluorosilicones, as describedin document EP-A-847 752.

The non-volatile oils may be present in the composition according to theinvention in a content ranging from 0% to 80% (in particular from 0.1%to 80%) by weight, preferably from 0% to 50% by weight (in particular0.1% to 50% by weight), relative to the total weight of the composition,and better still from 0% to 20% by weight (in particular 0.1% to 20%).

The composition according to the invention can also comprise a wax. Forthe purposes of the present invention, the term “wax” means a lipophilicfatty compound that is solid at room temperature (25° C.) andatmospheric pressure (760 mmHg, i.e. 10⁵ Pa), which undergoes areversible solid/liquid change of state and which has a melting point ofgreater than 30° C. and better still greater-than 55° C., which may beup to 200° C., in particular up to 120° C.

By taking the wax to its melting point, it is possible to make itmiscible with oils and to form a microscopically homogeneous mixture,but on returning the temperature of the mixture to room temperature,recrystallization of the wax in the mixture of oils is obtained.

According to the invention, the melting point values correspond to themelting peak measured using a differential scanning calorimeter (DSC),for example the calorimeter sold under the name DSC 30 by the companyMettler, with a temperature increase of 5 or 10° C. per minute.

For the purposes of the invention, the waxes are those generally used incosmetics and dermatology. Mention may be made in particular of beeswax,lanolin wax, Chinese insect waxes, rice wax, carnauba wax, candelillawax, ouricury wax, cork fiber wax, sugar cane wax, Japan wax, sumachwax, montan wax, microcrystalline waxes, paraffin waxes, ozokerites,ceresin wax, lignite wax, polyethylene waxes and the waxes obtained byFisher-Tropsch synthesis, and fatty acid esters of glycerides that aresolid at 40° C. and better still at more than 55° C. Mention may also bemade of the waxes obtained by catalytic hydrogenation of animal or plantoils containing linear or branched C₈-C₃₂ fatty chains. Among these,mention may be made in particular of hydrogenated jojoba oil,hydrogenated sunflower oil, hydrogenated castor oil, hydrogenatedcoconut oil and hydrogenated lanolin oil.

Mention may also be made of silicone waxes or fluoro waxes.

The waxes present in the composition may be dispersed in the form ofparticles in an aqueous phase as defined below. These particles may havean average size ranging from 50 nm to 10 μm and preferably from 50 nm to3.5 μm.

In particular, the wax may be present in the form of a wax-in-wateremulsion, the waxes possibly being in the form of particles with anaverage size ranging from 1 μm to 10 μm and preferably from 1 μm to 3.5μm.

In another embodiment of the composition according to the invention, thewax may be present in the form of a wax microdispersion, the wax beingin the form of particles with an average size of less than 1 μm and inparticular ranging from 50 nm to 500 nm. Wax microdispersions aredisclosed in documents EP-A-557 196 and EP-A-1 048 282.

The wax may also be present in a liquid fatty phase as a mixture withoils such as defined above.

The wax may also have a hardness ranging from 0.05 MPa to 15 MPa andpreferably ranging from 6 MPa to 15 MPa. The hardness is determined bymeasuring the compressive strength, measured at 20° C. using atexturometer sold under the name TA-XT2i by the company Rheo, equippedwith a stainless steel cylinder 2 mm in diameter travelling at ameasuring speed of 0.1 mm/s, and penetrating into the wax to apenetration depth of 0.3 mm. To carry out the hardness measurement, thewax is melted at a temperature equal to the melting point of the wax+20° C. The molten wax is cast in a container 30 mm in diameter and 20mm deep. The wax is recrystallized at room temperature (25° C.) over 24hours and is then stored for at least one hour at 20° C. before carryingout the hardness measurement. The value of the hardness is thecompressive strength measured divided by the area of the texturometercylinder in contact with the wax.

The wax may be present in the composition according to the invention ina content ranging from 0.1% to 50% by weight, relative to the totalweight of the composition, preferably from 0.5% to 30% by weight andbetter still from 1% to 20% by weight.

The composition according to the invention may contain at least onefatty compound that is pasty at room temperature. For the purposes ofthe invention, the expression “pasty fatty substance” means fattysubstances with a melting point ranging from 20 to 55° C., preferably 25to 45° C., and/or a viscosity at 40° C. ranging from 0.1 to 40 Pa.s (1to 400 poises), preferably 0.5 to 25 Pa.s, measured using a Contraves TVor Rhéomat 80 viscometer, equipped with a spindle rotating at 60 Hz. Aperson skilled in the art can select the spindle for measuring theviscosity from the spindles MS-r3 and MS-r4, on the basis of his generalknowledge, so as to be able to carry out the measurement of the pastycompound tested.

These fatty substances are preferably hydrocarbon-based compounds,optionally of polymeric type; they can also be chosen from siliconecompounds and/or fluoro compounds; they may also be in the form of amixture of hydrocarbon-based compounds and/or silicone compounds and/orfluoro compounds. In the case of a mixture of different pasty fattysubstances, the hydrocarbon-based pasty compounds (containing mainlyhydrogen and carbon atoms and optionally ester groups) are preferablyused in major proportion.

Among the pasty compounds which may be used in the composition accordingto the invention, mention may be made of lanolins and lanolinderivatives such as acetylated lanolins or oxypropylenated lanolins orisopropyl lanolate, having a viscosity of from 18 to 21 Pa.s, preferably19 to 20.5 Pa.s, and/or a melting point of from 30 to 55° C., andmixtures thereof. It is also possible to use esters of fatty acids or offatty alcohols, in particular those containing from 20 to 65 carbonatoms (melting point of about from 20 to 35° C. and/or viscosity at 40°C. ranging from 0.1 to 40 Pa.s), such as triisostearyl or cetyl citrate;arachidyl propionate; polyvinyl laurate; cholesterol esters, such astriglycerides of plant origin, such as hydrogenated plant oils, viscouspolyesters such as poly(12-hydroxystearic acid), and mixtures thereof.Triglycerides of plant origin which may be used are hydrogenated castoroil derivatives, such as “Thixinr” from Rhéox.

Mention may also be made of pasty silicone fatty substances such aspolydimethylsiloxanes (PDMSs) containing pendent chains of the alkyl oralkoxy type containing from 8 to 24 carbon atoms, and having a meltingpoint of 20-55° C., such as stearyldimethicones, in particular thosesold by Dow Corning under the trade names DC2503 and DC25514, andmixtures thereof.

The pasty fatty substance may be present in the composition according tothe invention in a proportion of from 0% to 60% (in particular 0.01% to60%) by weight, relative to the total weight of the composition,preferably in a proportion of from 0.5% to 45% by weight, and betterstill ranging from 2% to 30% by weight, in the composition.

The composition according to the invention may also comprise an aqueousmedium, constituting an aqueous phase, which may be the continuous phaseof the composition.

The aqueous phase may consist essentially of water; it may also comprisea mixture of water and of water-miscible solvent (miscibility in waterof greater than 50% by weight at 25° C.), for instance lowermonoalcohols containing from 1 to 5 carbon atoms such as ethanol orisopropanol, glycols containing from 2 to 8 carbon atoms, such aspropylene glycol, ethylene glycol, 1,3-butylene glycol or dipropyleneglycol, C₃-C₄ ketones and C₂-C₄ aldehydes.

The aqueous phase (water and optionally the water-miscible organicsolvent) may be present in a content ranging from 1% to 95% by weight,relative to the total weight of the composition, preferably from 3% to80% by weight and better still from 5% to 60% by weight.

The composition according to the invention can contain emulsifyingsurfactants, present in particular in a proportion ranging from 2% to30% by weight relative to the total weight of the composition, andbetter still from 5% to 15%. These surfactants may be chosen fromanionic and nonionic surfactants. Reference may be made to the document“Encyclopedia of Chemical Technology, Kirk-Othmer”, volume 22, pp.333-432, 3rd edition, 1979, Wiley, for the definition of the propertiesand functions (emulsifying) of surfactants, in particular pp. 347-377 ofsaid reference, for the anionic and nonionic surfactants.

The surfactants preferably used in the composition according to theinvention are chosen from:

-   -   nonionic surfactants: fatty acids, fatty alcohols,        polyethoxylated or polyglycerolated fatty alcohols such as        polyethoxylated stearyl or cetylstearyl alcohol, fatty acid        esters of sucrose, alkylglucose esters, in particular        polyoxyethylenated fatty esters of C₁-C₆ alkyl glucose, and        mixtures thereof;    -   anionic surfactants: C₁₆-C₃₀ fatty acids neutralized with        amines, aqueous ammonia or alkaline salts, and mixtures thereof.

Surfactants which make it possible to obtain an oil-in-water orwax-in-water emulsion are preferably used.

The composition according to the invention comprises at least one secondfilm-forming polymer, different from the first polymer described above,in the form of solid particles dispersed in the physiologicallyacceptable medium. These particles may be dispersed in an aqueous phaseor in a liquid fatty phase. The composition can comprise a blend ofthese polymers. The second film-forming polymer is insoluble in themedium of the composition, that is to say that it remains in the form ofparticles in the mixture of the ingredients of the composition formingthe physiologically acceptable medium. Thus, the expression “polymerthat is insoluble in the physiologically acceptable medium” should beunderstood as meaning a polymer whose solubility in this medium is lessthan 1% by weight.

The second film-forming polymer may be present in the compositionaccording to the invention in a solids content ranging from 0.1% to 60%by weight relative to the total weight of the composition, preferablyfrom 0.5% to 40% by weight and better still from 1% to 30% by weight.

In the present application, the expression “film-forming polymer” meansa polymer which is capable, by itself or in the presence of an auxiliaryfilm-forming agent, of forming a continuous and adherent film on asupport, in particular on keratin materials.

A film-forming polymer capable of forming a hydrophobic film, i.e. apolymer whose film has a water-solubility at 25° C. of less than 1% byweight, is preferably used.

Among the film-forming polymers which may be used in the composition ofthe present invention, mention may be made of synthetic polymers, ofradical-mediated type or of polycondensate type, and polymers of naturalorigin, and mixtures thereof.

The expression “radical-mediated film-forming polymer” means a polymerobtained by polymerization of monomers containing unsaturation, inparticular ethylenic unsaturation, each monomer being capable ofhomopolymerizing (unlike polycondensates).

The film-forming polymers of radical-mediated type may be, inparticular, vinyl polymers or copolymers, in particular acrylicpolymers.

The vinyl film-forming polymers can result from the polymerization ofmonomers containing ethylenic unsaturation and containing at least oneacidic group and/or esters of these acidic monomers and/or amides ofthese acidic monomers.

Monomers bearing an acidic group which may be used are α,β-ethylenicunsaturated carboxylic acids such as acrylic acid, methacrylic acid,crotonic acid, maleic acid or itaconic acid. (Meth)acrylic acid andcrotonic acid are preferably used, and more preferably (meth)acrylicacid.

The esters of acidic monomers are advantageously chosen from(meth)acrylic acid esters (also known as (meth)acrylates), especially(meth)acrylates of an alkyl, in particular of a C₁-C₃₀ and preferablyC₁-C₂₀ alkyl, (meth)acrylates of an aryl, in particular of a C₆-C₁₀aryl, and (meth)acrylates of a hydroxyalkyl, in particular of a C₂-C₆hydroxyalkyl.

Among the alkyl (meth)acrylates which may be mentioned are methylmethacrylate, ethyl methacrylate, butyl methacrylate, isobutylmethacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate andcyclohexyl methacrylate.

Among the hydroxyalkyl (meth)acrylates which may be mentioned arehydroxyethyl acrylate, 2-hydroxypropyl acrylate, hydroxyethylmethacrylate and 2-hydroxypropyl methacrylate.

Among the aryl (meth)acrylates which may be mentioned are benzylacrylate and phenyl acrylate.

The (meth)acrylic acid esters that are particularly preferred are thealkyl (meth)acrylates.

According to the present invention, the alkyl group of the esters may beeither fluorinated or perfluorinated, i.e. some or all of the hydrogenatoms of the alkyl group are substituted with fluorine atoms.

As amides of the acidic monomers, mention may be made, for example, of(meth)acrylamides, and especially N-alkyl(meth)acrylamides, inparticular of a C₂-C₁₂ alkyl. Among the N-alkyl(meth)acrylamides whichmay be mentioned are N-ethylacrylamide, N-t-butylacrylamide,N-t-octylacrylamide and N-undecylacrylamide.

The vinyl film-forming polymers can also result from thehomopolymerization or copolymerization of monomers chosen from vinylesters and styrene monomers. In particular, these monomers may bepolymerized with acidic monomers and/or esters thereof and/or amidesthereof, such as those mentioned above.

Examples of vinyl esters which may be mentioned are vinyl acetate, vinylneodecanoate, vinyl pivalate, vinyl benzoate and vinyl t-butylbenzoate.

Styrene monomers which may be mentioned are styrene and α-methylstyrene.

It is possible to use any monomer known to those skilled in the artwhich falls within the categories of acrylic and vinyl monomers(including monomers modified with a silicone chain).

Among the film-forming polycondensates which may be mentioned arepolyurethanes, polyesters, polyesteramides, polyamides, epoxy esterresins and polyureas.

The polyurethanes may be chosen from anionic, cationic, nonionic andamphoteric polyurethanes, polyurethane-acrylics,polyurethane-polyvinylpyrrolidones, polyester-polyurethanes,polyether-polyurethanes, polyureas and polyurea-polyurethanes, andmixtures thereof.

The polyesters may be obtained, in a known manner, by polycondensationof dicarboxylic acids with polyols, in particular diols.

The dicarboxylic acid may be aliphatic, alicyclic or aromatic. Examplesof such acids which may be mentioned are: oxalic acid, malonic acid,dimethylmalonic acid, succinic acid, glutaric acid, adipic acid, pimelicacid, 2,2-dimethylglutaric acid, azelaic acid, suberic acid, sebacicacid, fumaric acid, maleic acid, itaconic acid, phthalic acid,dodecanedioic acid, 1,3-cyclohexanedicarboxylic acid,1,4-cyclohexanedicarboxylic acid, isophthalic acid, terephthalic acid,2,5-norboranedicarboxylic acid, diglycolic acid, thiodipropionic acid,2,5-naphthalenedicarboxylic acid and 2,6-naphthalenedicarboxylic acid.These dicarboxylic acid monomers may be used alone or in combinationwith at least two dicarboxylic acid monomers. Among these monomers, theones preferably chosen are phthalic acid, isophthalic acid andterephthalic acid.

The diol may be chosen from aliphatic, alicyclic and aromatic diols. Thediol preferably used is one chosen from: ethylene glycol, diethyleneglycol, triethylene glycol, 1,3-propanediol, cyclohexanedimethanol,4-butanediol. Other polyols which may be used are glycerol,pentaerythritol, sorbitol and trimethylolpropane.

The polyesteramides may be obtained in a manner analogous to that of thepolyesters, by polycondensation of diacids with diamines or aminoalcohols. Diamines which may be used are ethylenediamine,hexamethylenediamine and meta- or para-phenylenediamine. An aminoalcohol which may be used is monoethanolamine.

The polyester may also comprise at least one monomer bearing at leastone group —SO₃M, with M representing a hydrogen atom, an ammonium ionNH₄ ⁺ or a metal ion such as, for example, an Na⁺, Li⁺, K⁺, Mg²⁺, Ca²⁺,Cu²⁺, Fe²⁺ or Fe³⁺ ion. A difunctional aromatic monomer comprising sucha group —SO₃M may be used in particular.

The aromatic nucleus of the difunctional aromatic monomer also bearing agroup —SO₃M as described above may be chosen, for example, from benzene,naphthalene, anthracene, biphenyl, oxybiphenyl, sulfonylbiphenyl andmethylenebiphenyl nuclei. As examples of difunctional aromatic monomersalso bearing a group —SO₃M, mention may be made of: sulfoisophthalicacid, sulfoterephthalic acid, sulfophthalic acid,4-sulfonaphthalene-2,7-dicarboxylic acid.

The copolymers preferably used are those based onisophthalate/sulfoisophthalate, and more particularly copolymersobtained by condensation of diethylene glycol, cyclohexanedimethanol,isophthalic acid and sulfoisophthalic acid. Such polymers are sold, forexample, under the brand name Eastman AQ® by the company EastmanChemical Products.

The polymers of natural origin, optionally modified, may be chosen fromshellac resin, sandarac gum, dammar resins, elemi gums, copal resins andcellulose polymers, and mixtures thereof.

According to a first embodiment of the composition according to theinvention, the second film-forming polymer may be present in the form ofparticles in dispersion in an aqueous phase, which is generally known asa latex or pseudolatex. The techniques for preparing these dispersionsare well known to those skilled in the art.

Aqueous dispersions of film-forming polymers which may be used are theacrylic dispersions sold under the names Neocryl XK-90®, NeocrylA-1070®, Neocryl A-1090®, Neocryl BT-62®, Neocryl A-1079® and NeocrylA-523® by the company Avecia-Neoresins, Dow Latex 432® by the companyDow Chemical, Daitosol 5000 AD® by the company Daito Kasey Kogyo; or theaqueous dispersions of polyurethane sold under the names Neorez R-981®and Neorez R-974® by the company Avecia-Neoresins, Avalure UR-405®,Avalure UR-410®, Avalure UR-425®, Avalure UR-450®, Sancure 875®, Sancure861®, Sancure 878® and Sancure 2060® by the company Goodrich, Impranil85® by the company Bayer and Aquamere H-1511° by the company Hydromer.

Aqueous dispersions of film-forming polymers which may also be used arethe polymer dispersions resulting from the radical-mediatedpolymerization of one or more radical-mediated monomers within and/orpartially at the surface of pre-existing particles of at least onepolymer chosen from the group consisting of polyurethanes, polyureas,polyesters, polyesteramides and/or alkyds. These polymers are generallyreferred to as hybrid polymers.

Furthermore, the aqueous phase of the composition may comprise anadditional water-soluble polymer present in the aqueous medium of thecomposition in dissolved form. Examples of water-soluble film-formingpolymers which may be mentioned are:

-   -   proteins, for instance proteins of plant origin such as wheat        proteins and soybean proteins; proteins of animal origin such as        keratins, for example keratin hydrolysates and sulfonic        keratins;    -   anionic, cationic, amphoteric or nonionic chitin or chitosan        polymers;    -   polymers of celluloses such as hydroxyethylcellulose,        hydroxypropylcellulose, methylcellulose,        ethylhydroxyethylcellulose and carboxymethylcellulose, and        quaternized cellulose derivatives;    -   acrylic polymers or copolymers, such as polyacrylates or        polymethacrylates;    -   vinyl polymers, for instance polyvinylpyrrolidones, copolymers        of methyl vinyl ether and of malic anhydride, the copolymer of        vinyl acetate and of crotonic acid, copolymers of        vinylpyrrolidone and of vinyl acetate; copolymers of        vinylpyrrolidone and of caprolactam; polyvinyl alcohol;    -   polymers of natural origin, which are optionally modified, such        as:    -   gum arabics, guar gum, xanthan derivatives, karaya gum;    -   alginates and carrageenans;    -   glycoaminoglycans, hyaluronic acid and derivatives thereof;    -   shellac resin, sandarac gum, dammar resins, elemi gums and copal        resins;    -   deoxyribonucleic acid;    -   mucopolysaccharides such as hyaluronic acid and chondroitin        sulfate, and mixtures thereof.

According to another embodiment of the composition according to theinvention, the second film-forming polymer may be present in the form ofsurface-stabilized particles dispersed in a liquid fatty phasecomprising organic solvents or oils such as those described above. Forthe purposes of the invention, the expression “liquid fatty phase” meansa fatty phase which is liquid at room temperature (25° C.) andatmospheric pressure (760 mmHg, i.e. 10⁵ Pa), composed of one or morefatty substances that are liquid at room temperature, also known asoils, which are generally mutually compatible.

The liquid fatty phase preferably comprises a volatile oil, optionallymixed with a non-volatile oil, the oils possibly being chosen from thosementioned above.

The dispersion of surface-stabilized polymer particles may bemanufactured as disclosed in document EP-A-749 747. It may be obtainedby dispersion polymerization, that is to say by precipitating thepolymer during formation, with protection of the formed particles usinga stabilizer.

The choice of the liquid fatty phase is made by a person skilled in theart as a function of the nature of the monomers constituting the polymerand/or of the nature of the stabilizer, as indicated below.

The polymer particles are surface-stabilized by means of a stabilizerwhich may be a block polymer, a grafted polymer and/or a random polymer,alone or as a mixture.

Dispersions of film-forming polymer in the liquid fatty phase, in thepresence of stabilizers, are disclosed in particular in documents EP-A-0749 746, EP-A-0 923 928 and EP-A-0 930 060, the content of which isincorporated in the present patent application by reference.

Among the grafted polymers that may be mentioned are silicone polymersgrafted with a hydrocarbon-based chain; hydrocarbon-based polymersgrafted with a silicone chain.

Grafted copolymers having, for example, an insoluble skeleton ofpolyacrylic type with soluble grafts of poly(12-hydroxystearic acid)type are also suitable.

Grafted-block or block copolymers comprising at least one block ofpolyorganosiloxane type and at least one block of a free-radical polymermay also be used, for instance grafted copolymers of acrylic/siliconetype which may be used especially when the non-aqueous medium issilicone-based.

The stabilizer may also be chosen from grafted-block or block copolymerscomprising at least one block of polyorganosiloxane type and at leastone block of a polyether. The polyorganosiloxane block may especially bea polydimethylsiloxane or a poly(C₂-C₁₈)alkylmethylsiloxane; thepolyether block may be a C₂-C₁₈ polyalkylene, in particularpolyoxyethylene and/or polyoxypropylene. In particular, dimethiconecopolyols or (C₂-C₁₈)alkylmethicone copolyols may be used. It ispossible, for example, to use the dimethicone copolyol sold under thename “Dow Corning 3225C” by the company Dow Corning, or the laurylmethicone copolyol sold under the name “Dow Corning Q2-5200” by thecompany Dow Corning.

As grafted-block or block copolymers, use may be made of copolymerscomprising at least one block resulting from the polymerization of atleast one ethylenic monomer, containing one or more optionallyconjugated ethylenic bonds, such as ethylene, butadiene or isoprene, andat least one block of a styrene polymer. When the ethylenic monomercomprises several optionally conjugated ethylenic bonds, the residualethylenic unsaturations after the polymerization are generallyhydrogenated. Thus, in a known manner, the polymerization of isopreneleads, after hydrogenation, to the formation of ethylene-propyleneblock, and the polymerization of butadiene leads, after hydrogenation,to the formation of ethylene-butylene block. Among these blockcopolymers, mention may be made of copolymers of “diblock” or “triblock”type, of the type such as polystyrene/polyisoprene,polystyrene/polybutadiene such as those sold under the name “LuvitolHSB” by BASF, of the polystyrene/copoly(ethylene-propylene) type such asthose sold under the name “Kraton” by Shell Chemical Co., oralternatively of the polystyrene/copoly(ethylene-butylene) type.

As grafted-block or block copolymers comprising at least one blockresulting from the polymerization of at least one ethylenic monomer,such as ethylene or isobutylene, and of at least one block of an acrylicpolymer such as methyl methacrylate, mention may be made of thepoly(methyl methacrylate)/polyisobutylene diblock or triblock copolymersor the grafted copolymers containing a poly(methyl methacrylate)skeleton and polyisobutylene grafts.

As grafted-block or block copolymers comprising at least one blockresulting from the polymerization of at least one ethylenic monomer andof at least one block of a polyether such as a C₂-C₁₈ polyoxyalkylene,in particular polyoxyethylene and/or polyoxypropylene, mention may bemade of polyoxyethylene/polybutadiene or polyoxyethylene/polyisobutylenediblock or triblock copolymers.

Use may also be made of copolymers of C₁-C₄ alkyl (meth)acrylates, andof C₈-C₃₀ alkyl (meth)acrylates. Mention may be made in particular ofthe stearyl methacrylate/methyl methacrylate copolymer.

In this case, it is then preferred to use as stabilizer either a graftedpolymer or a block polymer, so as to have better interfacial activity.Specifically, the blocks or grafts that are insoluble in the synthesissolvent provide a more voluminous coverage at the surface of theparticles.

When the liquid fatty phase comprises at least one silicone oil, thestabilizer is preferably chosen from the group consisting ofgrafted-block or block copolymers comprising at least one block ofpolyorganosiloxane type and at least one block of a free-radical polymeror of a polyether or of a polyester, for instancepolyoxy(C₂-C₁₈)alkylene blocks and especially polyoxypropylene and/oroxyethylene blocks.

When the liquid fatty phase does not comprise a silicone oil, thestabilizer is preferably chosen from the group consisting of:

-   -   (a) grafted-block or block copolymers comprising at least one        block of polyorganosiloxane type and at least one block of a        free-radical polymer or of a polyether or of a polyester,    -   (b) copolymers of C₁-C₄ alkyl acrylates or methacrylates and of        C₈-C₃₀ alkyl acrylates or methacrylates,    -   (c) grafted-block or block copolymers comprising at least one        block resulting from the polymerization of at least one        ethylenic monomer containing conjugated ethylenic bonds,        and at least one block of a vinyl or acrylic polymer or of a        polyether or of a polyester, or blends thereof.

Diblock polymers are preferably used as stabilizer.

The size of the particles of the second film-forming polymer dispersedeither in the aqueous phase or in the liquid fatty phase can range from5 nm to 600 nm and preferably from 20 nm to 300 nm.

The composition according to the invention may comprise an auxiliaryfilm-forming agent for promoting the formation of a film with the secondfilm-forming polymer. Such a film-forming agent may be chosen from anycompound known to those skilled in the art as being capable offulfilling the desired function, and may be chosen in particular fromplasticizers and coalescers.

In addition, the liquid fatty phase may also contain a third additionalfilm-forming polymer dissolved in the liquid fatty phase, also known asa liposoluble polymer.

Liposoluble polymers that may especially be mentioned include copolymersresulting from the copolymerization of at least one vinyl ester and ofat least one other monomer which may be an olefin, an alkyl vinyl etheror an allylic or methallylic ester, as described in patent applicationFR-A-2 232 303, the content of which is incorporated into the presentpatent application by reference.

As liposoluble film-forming polymers which may be used in the invention,mention may also be made of polyalkylenes and in particular copolymersof C₂-C₂₀ alkenes, such as polybutene, alkylcelluloses with a linear orbranched, saturated or unsaturated C₁-C₈ alkyl radical, for instanceethylcellulose and propylcellulose, copolymers of vinylpyrrolidone (VP)and in particular copolymers of vinylpyrrolidone and of C₂ to C₄₀ andbetter still C₃ to C₂₀ alkene. As examples of VP copolymers which may beused in the invention, mention may be made of the copolymers of VP/vinylacetate, VP/ethyl methacrylate, butylated polyvinylpyrrolidone (PVP),VP/ethyl methacrylate/methacrylic acid, VP/eicosene, VP/hexadecene,VP/triacontene, VP/styrene or VP/acrylic acid/lauryl methacrylate.

The liposoluble film-forming polymer may be present in the compositionin a content ranging from 0.1% to 15% by weight and better still from 2%to 10% by weight relative to the total weight of the composition.

The composition according to the invention may also comprise a dyestuff,for instance pulverulent dyestuffs, liposoluble dyes and water-solubledyes. This dyestuff may be present in a content ranging from 0.01% to30% by weight, relative to the total weight of the composition.

The pulverulent dyestuffs may be chosen from pigments and nacres.

The pigments may be white or coloured, mineral and/or organic, andcoated or uncoated. Among the mineral pigments which may be mentionedare titanium dioxide, optionally surface-treated, zirconium oxide, zincoxide or cerium oxide, as well as iron oxide, chromium oxide, manganeseviolet, ultramarine blue, chromium hydrate and ferric blue. Among theorganic pigments which may be mentioned are carbon black, pigments of D& C type, and lakes based on cochineal carmine or on barium, strontium,calcium or aluminium.

The nacres may be chosen from white nacreous pigments such as micacoated with titanium or with bismuth oxychloride, coloured nacreouspigments such as titanium mica with iron oxides, titanium mica with, inparticular, ferric blue or chromium oxide, titanium mica with an organicpigment of the above-mentioned type, and nacreous pigments based onbismuth oxychloride.

The liposoluble dyes are, for example, Sudan Red, D&C Red 17, D&C Green6, β-carotene, soybean oil, Sudan Brown, D&C Yellow 11, D&C Violet 2,D&C Orange 5, quinoline yellow and annatto. The water-soluble dyes are,for example, beetroot juice and methylene blue.

The composition of the invention may also comprise any additive usuallyused in cosmetics, such as antioxidants, fillers, preserving agents,fragrances, neutralizing agents, thickeners, cosmetic or dermatologicalactive agents such as, for example, emollients, moisturizers, vitaminsand sunscreens, and mixtures thereof. These additives may be present inthe composition in a content ranging from 0% to 20% (in particular from0.01% to 20%) relative to the total weight of the composition and betterstill from 0.01% to 10% (if present).

Needless to say, a person skilled in the art will take care to selectthe optional additional additives and/or the amount thereof such thatthe advantageous properties of the composition according to theinvention are not, or are not substantially, adversely affected by theaddition envisaged.

The composition according to the invention may be manufactured by theknown processes generally used in cosmetics or dermatology.

The invention is illustrated in greater detail in the examples whichfollow.

EXAMPLE 1

A mascara having the composition below was prepared:

Carnauba wax 2.6 g Beeswax 3.3 g Paraffin wax 10.4 g Hydrogenated jojobaoil 0.2 g Hydrogenated palm oil 0.2 g Polyamide resin with ester endgroups, 1 g sold under the name “Uniclear ® 100” by the company ArizonaChemical 2-Amino-2-methyl-1,3-propanediol 0.8 g Triethanolamine 2.4 gStearic acid 6.6 g Hydroxyethylcellulose 0.8 g Gum arabic 0.6 g Ethylacrylate/methyl methacrylate 7 g AM copolymer (80/20) as an aqueousdispersion containing 50% AM (Daitosol 5000 AD from Saito) Black ironoxide 5 g Preserving agents qs Water qs 100 g

This mascara is easy to apply and adheres well to the eyelashes duringand after application; the eyelashes are made up quickly. It also givesinstantaneous loading of the eyelashes.

A mascara composition having the composition below was prepared:

Carnauba wax 4.6 g Rice bran wax 2.1 g Paraffin 2.2 g Beeswax 8.2 gPolyamide resin with ester end groups, sold 1 g under the name“Uniclear ® 100” by the company Arizona Chemical Talc 1 g Bentonite 5 gVinyl acetate/allyl stearate copolymer 6.5 g (65/35) (Mexomère PQ fromChimex) Polyvinyl laurate (Mexomère PP from Chimex) 0.7 gSulphopolyester (AQ 55S from Eastman 0.12 g Chemical) Isododecane 53.9 gPropylene carbonate 1.6 g Pigments 4.9 g Preserving agents qs Water qs100 g

This is mascara adheres well to the eyelashes during and afterapplication. It gives the eyelashes good instantaneous loading.

EXAMPLE 3

a) Dispersion of Polymer in Isododecane Used:

A dispersion of non-crosslinked copolymer of methyl acrylate and ofacrylic acid in a 95/5 ratio, in isododecane, was prepared according tothe method of Example 7 of document EP-A-749 747. A dispersion is thusobtained of particles of poly(methyl acrylate/acrylic acid)surface-stabilized in isododecane with apolystyrene/copoly(ethylene-propylene) diblock block copolymer soldunder the name Kraton G1701 (Shell), with a solids content of 24.2% byweight, a mean particle size of 180 nm and a Tg of 20° C. This copolymercan form a film at room temperature.

b) A Mascara Having the Composition Below was Prepared:

Carnauba wax 4.7 g Rice bran wax 2.1 g Paraffin 2.2 g Beeswax 8.2 gPolyamide resin with ester end groups, sold 0.5 g under the name“Uniclear ® 100” by the company Arizona Chemical Dispersion of polymerin isododecane 10 g according to a) Talc 1 g Bentonite 5 g Vinylacetate/allyl stearate copolymer 6.5 g (65/35) (Mexomère PQ from Chimex)Polyvinyl laurate (Mexomère PP from Chimex) 0.7 g Propylene carbonate1.6 g Pigments 4.9 g Preserving agents qs Isododecane qs 100 g

This mascara adheres well to the eyelashes during and after application.It gives the eyelashes good instantaneous loading.

1. A process for increasing the adhesion of and/or expressly loadingmake-up on eyelashes, comprising applying to said eyelashes a mascaracomprising: (i) at least one polymer chosen from ethylenediamine/stearyldimer tallate copolymer; (ii) water; (iii) at least one coloring agent;and (iv) at least one preservative; wherein said mascara comprises afatty phase, and wherein said applying said mascara increases theadhesion of and/or expressly loads said mascara on the eyelashes.
 2. Theprocess according to claim 1, wherein said mascara further comprises atleast one second polymer that is film-forming and different than the atleast one polymer.
 3. The process according to claim 2, wherein said atleast one second polymer is hydroxyethylcellulose.
 4. The processaccording to claim 1, wherein said fatty phase comprises at least onehydrocarbon-based oil.
 5. The process according to claim 4, wherein saidat least one hydrocarbon-based oil is isododecane.
 6. The processaccording to claim 1, wherein said fatty phase comprises at least onesilicone oil.